Electromagnets

What type of magnet that can turned on and off?

• electromagnet

• permanent magnet

• electricity

• battery

Magnets on refrigerator cannot be turned off. Which type of magnets they belong?

• electromagnets

• battery

• permanent magnets

• copper wire

Why doe the compass needle move when the electricity flows through the coiled wire?

• Because a magnetic field is not produced, which do not attract to the needle.

• Because a magnetic field is produced, which attracts the compass needle.

• Because the battery produced magnetic field.

Tags

NGSS.MS-PS2-3

What are the components of the electromagnets?

• battery, wire and bulb

• battery , copper wire and paper clips

• battery, copper wire and iron nail

• battery, wire and aluminum

What is the role of the battery in the electromagnet?

• It provides light energy for the electromagnet.

• It provides magnetic field for the electromagnet.

• It provides sound energy for the electromagnet.

• It provides the power source for the electromagnet.

How can we control an electromagnet?

• By turning the electricity on and off.

• By turning the kinetic energy on and off.

Tags

NGSS.MS-PS2-3

What would happen if you took one end of the wire off the battery?

• The nail will be a magnet.

• The nail would no longer be a magnet

• Nothing will happened.

• The nail will heats up.

Tags

NGSS.MS-PS3-5

Which part of the electromagnets turned into a magnet when electricity flows through a coiled wire?

• Battery

• Copper wire

• Iron Nail

• Bulb

Tags

NGSS.MS-PS2-3

Which part of the electromagnet produces a magnetic field?

• Battery

• Coiled copper wire

• Bulb

• Iron nail

Tags

NGSS.MS-PS2-3

Which steps will you take to build an electromagnet?

• First, wrap the wire around a nail. Next, attach the ends of the wire to a battery to make an electric circuit.

• First, attach the ends of the wire to a battery to make an electric circuit. Next wrap the wire around a nail.